| Acronym | Meaning |
| CPSS | Coulomb-repulsion Perturbed Stationary State |
| AODC | Acridine Orange Direct Count [of Bacteria] |
| NRL | Naval Research Laboratories |
| ENC | Effective Nuclear Charge (model For Mol. Property Calcns.) |
| GISAXS | Grazing Incidence Small Angle X-ray Scattering |
| NLCR | Nonlinear Continuum Regression |
| CNO | Constrained Nonorthogonal Orbital (algorithm) |
| ART | Asphalt Residual Treatment |
| AEERL | Air And Energy Engineering Research Laboratory (US EPA) |
| ANDA | Abbreviated New Drug Application |